<template>
    <div class="app-container">
        <el-form label-width="120px">
            <el-form-item label="信息描述">
                <el-tag type="info">excel模版说明</el-tag>
                <el-tag>
                    <i class="el-icon-download"/>
                    <a :href="'/static/01.xlsx'">点击下载模版</a>
                </el-tag>
            </el-form-item>
            <el-form-item label="选择Excel">
                <el-upload
                ref="upload"     
                :auto-upload="false"
                :on-success="fileUploadSuccess"
                :on-error="fileUploadError"
                :disabled="importBtnDisabled"
                :limit="1"
                :action="BASE_API+'/eduservice/edu-subject/addSubject'"
                name="file"
                accept="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet">
                <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
                <el-button
                :loading="loading"
                style="margin-left: 10px;"
                size="small"
                type="success"
                @click="submitUpload">上传到服务器</el-button>
                </el-upload>
             </el-form-item>
        </el-form>
    </div>
</template>
<script>
export default {

    data() {
        return {
            BASE_API: process.env.BASE_API,     // 接口API地址
            // OSS_PATH: process.env.OSS_PATH,     // 阿里云OSS地址
            // fileUploadBtnText: '上传到服务器',   // 按钮文字
            importBtnDisabled: false,           // 按钮是否禁用,
            loading: false
        }
    },
    created(){

    },

    methods: {
        //点击上传的文件接口
        submitUpload() {
            this.fileUploadBtnText = '正在上传'
            this.importBtnDisabled = true
            this.loading = true
            this.$refs.upload.submit() 
        },
        //上传成功
        fileUploadSuccess(response) {
            if (response.success === true) {
                // this.fileUploadBtnText = '导入添加课程成功'
                this.loading = false
                this.$message({
                    type: 'success',
                    message: '导入添加课程成功'
                })
                //跳转
                this.$router.push({path:'subject/list'})
            }
        },
        //上传失败
        fileUploadError(response) {
            // this.fileUploadBtnText = '添加课程失败'
            this.loading = false
            this.$message({
                type: 'error',
                message: '添加课程失败'
            })
        }
    }
}
</script>